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# Series circuits

In a series circuit, the flow of charge only has one path to follow.

An example of a series circuit
• The current $I$ in a series circuit is equal at every point in the circuit ($I=I_{1}=I_{2}=I_{3}=...$).

In a single water pipe, the amount of water passing though the pipe is the same at every point.

• The total potential difference $V$ across all of the components is the sum of the potential difference across each individual component (i.e. $V=V_{1}+V_{2}+V_{3}+...$).

• The total (effective) resistance $R$ is the sum of the resistances of each individual component (i.e. $R=R_{1}+R_{2}+R_{3}+...$).